tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * inode.c
3 *
4 * Copyright (C) 1995, 1996 by Volker Lendecke
5 * Modified for big endian by J.F. Chadima and David S. Miller
6 * Modified 1997 Peter Waltenberg, Bill Hawes, David Woodhouse for 2.1 dcache
7 * Modified 1998 Wolfram Pienkoss for NLS
8 * Modified 2000 Ben Harris, University of Cambridge for NFS NS meta-info
9 *
10 */
11
12#include <linux/module.h>
13
14#include <asm/system.h>
15#include <asm/uaccess.h>
16#include <asm/byteorder.h>
17
18#include <linux/time.h>
19#include <linux/kernel.h>
20#include <linux/mm.h>
21#include <linux/string.h>
22#include <linux/stat.h>
23#include <linux/errno.h>
24#include <linux/file.h>
25#include <linux/fcntl.h>
26#include <linux/slab.h>
27#include <linux/vmalloc.h>
28#include <linux/init.h>
29#include <linux/smp_lock.h>
30#include <linux/vfs.h>
31#include <linux/mount.h>
32#include <linux/seq_file.h>
33
34#include <linux/ncp_fs.h>
35
36#include <net/sock.h>
37
38#include "ncplib_kernel.h"
39#include "getopt.h"
40
41#define NCP_DEFAULT_FILE_MODE 0600
42#define NCP_DEFAULT_DIR_MODE 0700
43#define NCP_DEFAULT_TIME_OUT 10
44#define NCP_DEFAULT_RETRY_COUNT 20
45
46static void ncp_evict_inode(struct inode *);
47static void ncp_put_super(struct super_block *);
48static int ncp_statfs(struct dentry *, struct kstatfs *);
49static int ncp_show_options(struct seq_file *, struct vfsmount *);
50
51static struct kmem_cache * ncp_inode_cachep;
52
53static struct inode *ncp_alloc_inode(struct super_block *sb)
54{
55 struct ncp_inode_info *ei;
56 ei = (struct ncp_inode_info *)kmem_cache_alloc(ncp_inode_cachep, GFP_KERNEL);
57 if (!ei)
58 return NULL;
59 return &ei->vfs_inode;
60}
61
62static void ncp_destroy_inode(struct inode *inode)
63{
64 kmem_cache_free(ncp_inode_cachep, NCP_FINFO(inode));
65}
66
67static void init_once(void *foo)
68{
69 struct ncp_inode_info *ei = (struct ncp_inode_info *) foo;
70
71 mutex_init(&ei->open_mutex);
72 inode_init_once(&ei->vfs_inode);
73}
74
75static int init_inodecache(void)
76{
77 ncp_inode_cachep = kmem_cache_create("ncp_inode_cache",
78 sizeof(struct ncp_inode_info),
79 0, (SLAB_RECLAIM_ACCOUNT|
80 SLAB_MEM_SPREAD),
81 init_once);
82 if (ncp_inode_cachep == NULL)
83 return -ENOMEM;
84 return 0;
85}
86
87static void destroy_inodecache(void)
88{
89 kmem_cache_destroy(ncp_inode_cachep);
90}
91
92static int ncp_remount(struct super_block *sb, int *flags, char* data)
93{
94 *flags |= MS_NODIRATIME;
95 return 0;
96}
97
98static const struct super_operations ncp_sops =
99{
100 .alloc_inode = ncp_alloc_inode,
101 .destroy_inode = ncp_destroy_inode,
102 .drop_inode = generic_delete_inode,
103 .evict_inode = ncp_evict_inode,
104 .put_super = ncp_put_super,
105 .statfs = ncp_statfs,
106 .remount_fs = ncp_remount,
107 .show_options = ncp_show_options,
108};
109
110/*
111 * Fill in the ncpfs-specific information in the inode.
112 */
113static void ncp_update_dirent(struct inode *inode, struct ncp_entry_info *nwinfo)
114{
115 NCP_FINFO(inode)->DosDirNum = nwinfo->i.DosDirNum;
116 NCP_FINFO(inode)->dirEntNum = nwinfo->i.dirEntNum;
117 NCP_FINFO(inode)->volNumber = nwinfo->volume;
118}
119
120void ncp_update_inode(struct inode *inode, struct ncp_entry_info *nwinfo)
121{
122 ncp_update_dirent(inode, nwinfo);
123 NCP_FINFO(inode)->nwattr = nwinfo->i.attributes;
124 NCP_FINFO(inode)->access = nwinfo->access;
125 memcpy(NCP_FINFO(inode)->file_handle, nwinfo->file_handle,
126 sizeof(nwinfo->file_handle));
127 DPRINTK("ncp_update_inode: updated %s, volnum=%d, dirent=%u\n",
128 nwinfo->i.entryName, NCP_FINFO(inode)->volNumber,
129 NCP_FINFO(inode)->dirEntNum);
130}
131
132static void ncp_update_dates(struct inode *inode, struct nw_info_struct *nwi)
133{
134 /* NFS namespace mode overrides others if it's set. */
135 DPRINTK(KERN_DEBUG "ncp_update_dates_and_mode: (%s) nfs.mode=0%o\n",
136 nwi->entryName, nwi->nfs.mode);
137 if (nwi->nfs.mode) {
138 /* XXX Security? */
139 inode->i_mode = nwi->nfs.mode;
140 }
141
142 inode->i_blocks = (inode->i_size + NCP_BLOCK_SIZE - 1) >> NCP_BLOCK_SHIFT;
143
144 inode->i_mtime.tv_sec = ncp_date_dos2unix(nwi->modifyTime, nwi->modifyDate);
145 inode->i_ctime.tv_sec = ncp_date_dos2unix(nwi->creationTime, nwi->creationDate);
146 inode->i_atime.tv_sec = ncp_date_dos2unix(0, nwi->lastAccessDate);
147 inode->i_atime.tv_nsec = 0;
148 inode->i_mtime.tv_nsec = 0;
149 inode->i_ctime.tv_nsec = 0;
150}
151
152static void ncp_update_attrs(struct inode *inode, struct ncp_entry_info *nwinfo)
153{
154 struct nw_info_struct *nwi = &nwinfo->i;
155 struct ncp_server *server = NCP_SERVER(inode);
156
157 if (nwi->attributes & aDIR) {
158 inode->i_mode = server->m.dir_mode;
159 /* for directories dataStreamSize seems to be some
160 Object ID ??? */
161 inode->i_size = NCP_BLOCK_SIZE;
162 } else {
163 inode->i_mode = server->m.file_mode;
164 inode->i_size = le32_to_cpu(nwi->dataStreamSize);
165#ifdef CONFIG_NCPFS_EXTRAS
166 if ((server->m.flags & (NCP_MOUNT_EXTRAS|NCP_MOUNT_SYMLINKS))
167 && (nwi->attributes & aSHARED)) {
168 switch (nwi->attributes & (aHIDDEN|aSYSTEM)) {
169 case aHIDDEN:
170 if (server->m.flags & NCP_MOUNT_SYMLINKS) {
171 if (/* (inode->i_size >= NCP_MIN_SYMLINK_SIZE)
172 && */ (inode->i_size <= NCP_MAX_SYMLINK_SIZE)) {
173 inode->i_mode = (inode->i_mode & ~S_IFMT) | S_IFLNK;
174 NCP_FINFO(inode)->flags |= NCPI_KLUDGE_SYMLINK;
175 break;
176 }
177 }
178 /* FALLTHROUGH */
179 case 0:
180 if (server->m.flags & NCP_MOUNT_EXTRAS)
181 inode->i_mode |= S_IRUGO;
182 break;
183 case aSYSTEM:
184 if (server->m.flags & NCP_MOUNT_EXTRAS)
185 inode->i_mode |= (inode->i_mode >> 2) & S_IXUGO;
186 break;
187 /* case aSYSTEM|aHIDDEN: */
188 default:
189 /* reserved combination */
190 break;
191 }
192 }
193#endif
194 }
195 if (nwi->attributes & aRONLY) inode->i_mode &= ~S_IWUGO;
196}
197
198void ncp_update_inode2(struct inode* inode, struct ncp_entry_info *nwinfo)
199{
200 NCP_FINFO(inode)->flags = 0;
201 if (!atomic_read(&NCP_FINFO(inode)->opened)) {
202 NCP_FINFO(inode)->nwattr = nwinfo->i.attributes;
203 ncp_update_attrs(inode, nwinfo);
204 }
205
206 ncp_update_dates(inode, &nwinfo->i);
207 ncp_update_dirent(inode, nwinfo);
208}
209
210/*
211 * Fill in the inode based on the ncp_entry_info structure.
212 */
213static void ncp_set_attr(struct inode *inode, struct ncp_entry_info *nwinfo)
214{
215 struct ncp_server *server = NCP_SERVER(inode);
216
217 NCP_FINFO(inode)->flags = 0;
218
219 ncp_update_attrs(inode, nwinfo);
220
221 DDPRINTK("ncp_read_inode: inode->i_mode = %u\n", inode->i_mode);
222
223 inode->i_nlink = 1;
224 inode->i_uid = server->m.uid;
225 inode->i_gid = server->m.gid;
226
227 ncp_update_dates(inode, &nwinfo->i);
228 ncp_update_inode(inode, nwinfo);
229}
230
231#if defined(CONFIG_NCPFS_EXTRAS) || defined(CONFIG_NCPFS_NFS_NS)
232static const struct inode_operations ncp_symlink_inode_operations = {
233 .readlink = generic_readlink,
234 .follow_link = page_follow_link_light,
235 .put_link = page_put_link,
236 .setattr = ncp_notify_change,
237};
238#endif
239
240/*
241 * Get a new inode.
242 */
243struct inode *
244ncp_iget(struct super_block *sb, struct ncp_entry_info *info)
245{
246 struct inode *inode;
247
248 if (info == NULL) {
249 printk(KERN_ERR "ncp_iget: info is NULL\n");
250 return NULL;
251 }
252
253 inode = new_inode(sb);
254 if (inode) {
255 atomic_set(&NCP_FINFO(inode)->opened, info->opened);
256
257 inode->i_ino = info->ino;
258 ncp_set_attr(inode, info);
259 if (S_ISREG(inode->i_mode)) {
260 inode->i_op = &ncp_file_inode_operations;
261 inode->i_fop = &ncp_file_operations;
262 } else if (S_ISDIR(inode->i_mode)) {
263 inode->i_op = &ncp_dir_inode_operations;
264 inode->i_fop = &ncp_dir_operations;
265#ifdef CONFIG_NCPFS_NFS_NS
266 } else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) || S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) {
267 init_special_inode(inode, inode->i_mode,
268 new_decode_dev(info->i.nfs.rdev));
269#endif
270#if defined(CONFIG_NCPFS_EXTRAS) || defined(CONFIG_NCPFS_NFS_NS)
271 } else if (S_ISLNK(inode->i_mode)) {
272 inode->i_op = &ncp_symlink_inode_operations;
273 inode->i_data.a_ops = &ncp_symlink_aops;
274#endif
275 } else {
276 make_bad_inode(inode);
277 }
278 insert_inode_hash(inode);
279 } else
280 printk(KERN_ERR "ncp_iget: iget failed!\n");
281 return inode;
282}
283
284static void
285ncp_evict_inode(struct inode *inode)
286{
287 truncate_inode_pages(&inode->i_data, 0);
288 end_writeback(inode);
289
290 if (S_ISDIR(inode->i_mode)) {
291 DDPRINTK("ncp_evict_inode: put directory %ld\n", inode->i_ino);
292 }
293
294 if (ncp_make_closed(inode) != 0) {
295 /* We can't do anything but complain. */
296 printk(KERN_ERR "ncp_evict_inode: could not close\n");
297 }
298}
299
300static void ncp_stop_tasks(struct ncp_server *server) {
301 struct sock* sk = server->ncp_sock->sk;
302
303 sk->sk_error_report = server->error_report;
304 sk->sk_data_ready = server->data_ready;
305 sk->sk_write_space = server->write_space;
306 del_timer_sync(&server->timeout_tm);
307 flush_scheduled_work();
308}
309
310static int ncp_show_options(struct seq_file *seq, struct vfsmount *mnt)
311{
312 struct ncp_server *server = NCP_SBP(mnt->mnt_sb);
313 unsigned int tmp;
314
315 if (server->m.uid != 0)
316 seq_printf(seq, ",uid=%u", server->m.uid);
317 if (server->m.gid != 0)
318 seq_printf(seq, ",gid=%u", server->m.gid);
319 if (server->m.mounted_uid != 0)
320 seq_printf(seq, ",owner=%u", server->m.mounted_uid);
321 tmp = server->m.file_mode & S_IALLUGO;
322 if (tmp != NCP_DEFAULT_FILE_MODE)
323 seq_printf(seq, ",mode=0%o", tmp);
324 tmp = server->m.dir_mode & S_IALLUGO;
325 if (tmp != NCP_DEFAULT_DIR_MODE)
326 seq_printf(seq, ",dirmode=0%o", tmp);
327 if (server->m.time_out != NCP_DEFAULT_TIME_OUT * HZ / 100) {
328 tmp = server->m.time_out * 100 / HZ;
329 seq_printf(seq, ",timeout=%u", tmp);
330 }
331 if (server->m.retry_count != NCP_DEFAULT_RETRY_COUNT)
332 seq_printf(seq, ",retry=%u", server->m.retry_count);
333 if (server->m.flags != 0)
334 seq_printf(seq, ",flags=%lu", server->m.flags);
335 if (server->m.wdog_pid != NULL)
336 seq_printf(seq, ",wdogpid=%u", pid_vnr(server->m.wdog_pid));
337
338 return 0;
339}
340
341static const struct ncp_option ncp_opts[] = {
342 { "uid", OPT_INT, 'u' },
343 { "gid", OPT_INT, 'g' },
344 { "owner", OPT_INT, 'o' },
345 { "mode", OPT_INT, 'm' },
346 { "dirmode", OPT_INT, 'd' },
347 { "timeout", OPT_INT, 't' },
348 { "retry", OPT_INT, 'r' },
349 { "flags", OPT_INT, 'f' },
350 { "wdogpid", OPT_INT, 'w' },
351 { "ncpfd", OPT_INT, 'n' },
352 { "infofd", OPT_INT, 'i' }, /* v5 */
353 { "version", OPT_INT, 'v' },
354 { NULL, 0, 0 } };
355
356static int ncp_parse_options(struct ncp_mount_data_kernel *data, char *options) {
357 int optval;
358 char *optarg;
359 unsigned long optint;
360 int version = 0;
361 int ret;
362
363 data->flags = 0;
364 data->int_flags = 0;
365 data->mounted_uid = 0;
366 data->wdog_pid = NULL;
367 data->ncp_fd = ~0;
368 data->time_out = NCP_DEFAULT_TIME_OUT;
369 data->retry_count = NCP_DEFAULT_RETRY_COUNT;
370 data->uid = 0;
371 data->gid = 0;
372 data->file_mode = NCP_DEFAULT_FILE_MODE;
373 data->dir_mode = NCP_DEFAULT_DIR_MODE;
374 data->info_fd = -1;
375 data->mounted_vol[0] = 0;
376
377 while ((optval = ncp_getopt("ncpfs", &options, ncp_opts, NULL, &optarg, &optint)) != 0) {
378 ret = optval;
379 if (ret < 0)
380 goto err;
381 switch (optval) {
382 case 'u':
383 data->uid = optint;
384 break;
385 case 'g':
386 data->gid = optint;
387 break;
388 case 'o':
389 data->mounted_uid = optint;
390 break;
391 case 'm':
392 data->file_mode = optint;
393 break;
394 case 'd':
395 data->dir_mode = optint;
396 break;
397 case 't':
398 data->time_out = optint;
399 break;
400 case 'r':
401 data->retry_count = optint;
402 break;
403 case 'f':
404 data->flags = optint;
405 break;
406 case 'w':
407 data->wdog_pid = find_get_pid(optint);
408 break;
409 case 'n':
410 data->ncp_fd = optint;
411 break;
412 case 'i':
413 data->info_fd = optint;
414 break;
415 case 'v':
416 ret = -ECHRNG;
417 if (optint < NCP_MOUNT_VERSION_V4)
418 goto err;
419 if (optint > NCP_MOUNT_VERSION_V5)
420 goto err;
421 version = optint;
422 break;
423
424 }
425 }
426 return 0;
427err:
428 put_pid(data->wdog_pid);
429 data->wdog_pid = NULL;
430 return ret;
431}
432
433static int ncp_fill_super(struct super_block *sb, void *raw_data, int silent)
434{
435 struct ncp_mount_data_kernel data;
436 struct ncp_server *server;
437 struct file *ncp_filp;
438 struct inode *root_inode;
439 struct inode *sock_inode;
440 struct socket *sock;
441 int error;
442 int default_bufsize;
443#ifdef CONFIG_NCPFS_PACKET_SIGNING
444 int options;
445#endif
446 struct ncp_entry_info finfo;
447
448 data.wdog_pid = NULL;
449 server = kzalloc(sizeof(struct ncp_server), GFP_KERNEL);
450 if (!server)
451 return -ENOMEM;
452 sb->s_fs_info = server;
453
454 error = -EFAULT;
455 if (raw_data == NULL)
456 goto out;
457 switch (*(int*)raw_data) {
458 case NCP_MOUNT_VERSION:
459 {
460 struct ncp_mount_data* md = (struct ncp_mount_data*)raw_data;
461
462 data.flags = md->flags;
463 data.int_flags = NCP_IMOUNT_LOGGEDIN_POSSIBLE;
464 data.mounted_uid = md->mounted_uid;
465 data.wdog_pid = find_get_pid(md->wdog_pid);
466 data.ncp_fd = md->ncp_fd;
467 data.time_out = md->time_out;
468 data.retry_count = md->retry_count;
469 data.uid = md->uid;
470 data.gid = md->gid;
471 data.file_mode = md->file_mode;
472 data.dir_mode = md->dir_mode;
473 data.info_fd = -1;
474 memcpy(data.mounted_vol, md->mounted_vol,
475 NCP_VOLNAME_LEN+1);
476 }
477 break;
478 case NCP_MOUNT_VERSION_V4:
479 {
480 struct ncp_mount_data_v4* md = (struct ncp_mount_data_v4*)raw_data;
481
482 data.flags = md->flags;
483 data.int_flags = 0;
484 data.mounted_uid = md->mounted_uid;
485 data.wdog_pid = find_get_pid(md->wdog_pid);
486 data.ncp_fd = md->ncp_fd;
487 data.time_out = md->time_out;
488 data.retry_count = md->retry_count;
489 data.uid = md->uid;
490 data.gid = md->gid;
491 data.file_mode = md->file_mode;
492 data.dir_mode = md->dir_mode;
493 data.info_fd = -1;
494 data.mounted_vol[0] = 0;
495 }
496 break;
497 default:
498 error = -ECHRNG;
499 if (memcmp(raw_data, "vers", 4) == 0) {
500 error = ncp_parse_options(&data, raw_data);
501 }
502 if (error)
503 goto out;
504 break;
505 }
506 error = -EBADF;
507 ncp_filp = fget(data.ncp_fd);
508 if (!ncp_filp)
509 goto out;
510 error = -ENOTSOCK;
511 sock_inode = ncp_filp->f_path.dentry->d_inode;
512 if (!S_ISSOCK(sock_inode->i_mode))
513 goto out_fput;
514 sock = SOCKET_I(sock_inode);
515 if (!sock)
516 goto out_fput;
517
518 if (sock->type == SOCK_STREAM)
519 default_bufsize = 0xF000;
520 else
521 default_bufsize = 1024;
522
523 sb->s_flags |= MS_NODIRATIME; /* probably even noatime */
524 sb->s_maxbytes = 0xFFFFFFFFU;
525 sb->s_blocksize = 1024; /* Eh... Is this correct? */
526 sb->s_blocksize_bits = 10;
527 sb->s_magic = NCP_SUPER_MAGIC;
528 sb->s_op = &ncp_sops;
529 sb->s_bdi = &server->bdi;
530
531 server = NCP_SBP(sb);
532 memset(server, 0, sizeof(*server));
533
534 error = bdi_setup_and_register(&server->bdi, "ncpfs", BDI_CAP_MAP_COPY);
535 if (error)
536 goto out_bdi;
537
538 server->ncp_filp = ncp_filp;
539 server->ncp_sock = sock;
540
541 if (data.info_fd != -1) {
542 struct socket *info_sock;
543
544 error = -EBADF;
545 server->info_filp = fget(data.info_fd);
546 if (!server->info_filp)
547 goto out_fput;
548 error = -ENOTSOCK;
549 sock_inode = server->info_filp->f_path.dentry->d_inode;
550 if (!S_ISSOCK(sock_inode->i_mode))
551 goto out_fput2;
552 info_sock = SOCKET_I(sock_inode);
553 if (!info_sock)
554 goto out_fput2;
555 error = -EBADFD;
556 if (info_sock->type != SOCK_STREAM)
557 goto out_fput2;
558 server->info_sock = info_sock;
559 }
560
561/* server->lock = 0; */
562 mutex_init(&server->mutex);
563 server->packet = NULL;
564/* server->buffer_size = 0; */
565/* server->conn_status = 0; */
566/* server->root_dentry = NULL; */
567/* server->root_setuped = 0; */
568#ifdef CONFIG_NCPFS_PACKET_SIGNING
569/* server->sign_wanted = 0; */
570/* server->sign_active = 0; */
571#endif
572 server->auth.auth_type = NCP_AUTH_NONE;
573/* server->auth.object_name_len = 0; */
574/* server->auth.object_name = NULL; */
575/* server->auth.object_type = 0; */
576/* server->priv.len = 0; */
577/* server->priv.data = NULL; */
578
579 server->m = data;
580 /* Althought anything producing this is buggy, it happens
581 now because of PATH_MAX changes.. */
582 if (server->m.time_out < 1) {
583 server->m.time_out = 10;
584 printk(KERN_INFO "You need to recompile your ncpfs utils..\n");
585 }
586 server->m.time_out = server->m.time_out * HZ / 100;
587 server->m.file_mode = (server->m.file_mode & S_IRWXUGO) | S_IFREG;
588 server->m.dir_mode = (server->m.dir_mode & S_IRWXUGO) | S_IFDIR;
589
590#ifdef CONFIG_NCPFS_NLS
591 /* load the default NLS charsets */
592 server->nls_vol = load_nls_default();
593 server->nls_io = load_nls_default();
594#endif /* CONFIG_NCPFS_NLS */
595
596 server->dentry_ttl = 0; /* no caching */
597
598 INIT_LIST_HEAD(&server->tx.requests);
599 mutex_init(&server->rcv.creq_mutex);
600 server->tx.creq = NULL;
601 server->rcv.creq = NULL;
602 server->data_ready = sock->sk->sk_data_ready;
603 server->write_space = sock->sk->sk_write_space;
604 server->error_report = sock->sk->sk_error_report;
605 sock->sk->sk_user_data = server;
606
607 init_timer(&server->timeout_tm);
608#undef NCP_PACKET_SIZE
609#define NCP_PACKET_SIZE 131072
610 error = -ENOMEM;
611 server->packet_size = NCP_PACKET_SIZE;
612 server->packet = vmalloc(NCP_PACKET_SIZE);
613 if (server->packet == NULL)
614 goto out_nls;
615 server->txbuf = vmalloc(NCP_PACKET_SIZE);
616 if (server->txbuf == NULL)
617 goto out_packet;
618 server->rxbuf = vmalloc(NCP_PACKET_SIZE);
619 if (server->rxbuf == NULL)
620 goto out_txbuf;
621
622 sock->sk->sk_data_ready = ncp_tcp_data_ready;
623 sock->sk->sk_error_report = ncp_tcp_error_report;
624 if (sock->type == SOCK_STREAM) {
625 server->rcv.ptr = (unsigned char*)&server->rcv.buf;
626 server->rcv.len = 10;
627 server->rcv.state = 0;
628 INIT_WORK(&server->rcv.tq, ncp_tcp_rcv_proc);
629 INIT_WORK(&server->tx.tq, ncp_tcp_tx_proc);
630 sock->sk->sk_write_space = ncp_tcp_write_space;
631 } else {
632 INIT_WORK(&server->rcv.tq, ncpdgram_rcv_proc);
633 INIT_WORK(&server->timeout_tq, ncpdgram_timeout_proc);
634 server->timeout_tm.data = (unsigned long)server;
635 server->timeout_tm.function = ncpdgram_timeout_call;
636 }
637
638 ncp_lock_server(server);
639 error = ncp_connect(server);
640 ncp_unlock_server(server);
641 if (error < 0)
642 goto out_rxbuf;
643 DPRINTK("ncp_fill_super: NCP_SBP(sb) = %x\n", (int) NCP_SBP(sb));
644
645 error = -EMSGSIZE; /* -EREMOTESIDEINCOMPATIBLE */
646#ifdef CONFIG_NCPFS_PACKET_SIGNING
647 if (ncp_negotiate_size_and_options(server, default_bufsize,
648 NCP_DEFAULT_OPTIONS, &(server->buffer_size), &options) == 0)
649 {
650 if (options != NCP_DEFAULT_OPTIONS)
651 {
652 if (ncp_negotiate_size_and_options(server,
653 default_bufsize,
654 options & 2,
655 &(server->buffer_size), &options) != 0)
656
657 {
658 goto out_disconnect;
659 }
660 }
661 if (options & 2)
662 server->sign_wanted = 1;
663 }
664 else
665#endif /* CONFIG_NCPFS_PACKET_SIGNING */
666 if (ncp_negotiate_buffersize(server, default_bufsize,
667 &(server->buffer_size)) != 0)
668 goto out_disconnect;
669 DPRINTK("ncpfs: bufsize = %d\n", server->buffer_size);
670
671 memset(&finfo, 0, sizeof(finfo));
672 finfo.i.attributes = aDIR;
673 finfo.i.dataStreamSize = 0; /* ignored */
674 finfo.i.dirEntNum = 0;
675 finfo.i.DosDirNum = 0;
676#ifdef CONFIG_NCPFS_SMALLDOS
677 finfo.i.NSCreator = NW_NS_DOS;
678#endif
679 finfo.volume = NCP_NUMBER_OF_VOLUMES;
680 /* set dates of mountpoint to Jan 1, 1986; 00:00 */
681 finfo.i.creationTime = finfo.i.modifyTime
682 = cpu_to_le16(0x0000);
683 finfo.i.creationDate = finfo.i.modifyDate
684 = finfo.i.lastAccessDate
685 = cpu_to_le16(0x0C21);
686 finfo.i.nameLen = 0;
687 finfo.i.entryName[0] = '\0';
688
689 finfo.opened = 0;
690 finfo.ino = 2; /* tradition */
691
692 server->name_space[finfo.volume] = NW_NS_DOS;
693
694 error = -ENOMEM;
695 root_inode = ncp_iget(sb, &finfo);
696 if (!root_inode)
697 goto out_disconnect;
698 DPRINTK("ncp_fill_super: root vol=%d\n", NCP_FINFO(root_inode)->volNumber);
699 sb->s_root = d_alloc_root(root_inode);
700 if (!sb->s_root)
701 goto out_no_root;
702 sb->s_root->d_op = &ncp_root_dentry_operations;
703 return 0;
704
705out_no_root:
706 iput(root_inode);
707out_disconnect:
708 ncp_lock_server(server);
709 ncp_disconnect(server);
710 ncp_unlock_server(server);
711out_rxbuf:
712 ncp_stop_tasks(server);
713 vfree(server->rxbuf);
714out_txbuf:
715 vfree(server->txbuf);
716out_packet:
717 vfree(server->packet);
718out_nls:
719#ifdef CONFIG_NCPFS_NLS
720 unload_nls(server->nls_io);
721 unload_nls(server->nls_vol);
722#endif
723out_fput2:
724 if (server->info_filp)
725 fput(server->info_filp);
726out_fput:
727 bdi_destroy(&server->bdi);
728out_bdi:
729 /* 23/12/1998 Marcin Dalecki <dalecki@cs.net.pl>:
730 *
731 * The previously used put_filp(ncp_filp); was bogus, since
732 * it doesn't perform proper unlocking.
733 */
734 fput(ncp_filp);
735out:
736 put_pid(data.wdog_pid);
737 sb->s_fs_info = NULL;
738 kfree(server);
739 return error;
740}
741
742static void ncp_put_super(struct super_block *sb)
743{
744 struct ncp_server *server = NCP_SBP(sb);
745
746 lock_kernel();
747
748 ncp_lock_server(server);
749 ncp_disconnect(server);
750 ncp_unlock_server(server);
751
752 ncp_stop_tasks(server);
753
754#ifdef CONFIG_NCPFS_NLS
755 /* unload the NLS charsets */
756 unload_nls(server->nls_vol);
757 unload_nls(server->nls_io);
758#endif /* CONFIG_NCPFS_NLS */
759
760 if (server->info_filp)
761 fput(server->info_filp);
762 fput(server->ncp_filp);
763 kill_pid(server->m.wdog_pid, SIGTERM, 1);
764 put_pid(server->m.wdog_pid);
765
766 bdi_destroy(&server->bdi);
767 kfree(server->priv.data);
768 kfree(server->auth.object_name);
769 vfree(server->rxbuf);
770 vfree(server->txbuf);
771 vfree(server->packet);
772 sb->s_fs_info = NULL;
773 kfree(server);
774
775 unlock_kernel();
776}
777
778static int ncp_statfs(struct dentry *dentry, struct kstatfs *buf)
779{
780 struct dentry* d;
781 struct inode* i;
782 struct ncp_inode_info* ni;
783 struct ncp_server* s;
784 struct ncp_volume_info vi;
785 struct super_block *sb = dentry->d_sb;
786 int err;
787 __u8 dh;
788
789 d = sb->s_root;
790 if (!d) {
791 goto dflt;
792 }
793 i = d->d_inode;
794 if (!i) {
795 goto dflt;
796 }
797 ni = NCP_FINFO(i);
798 if (!ni) {
799 goto dflt;
800 }
801 s = NCP_SBP(sb);
802 if (!s) {
803 goto dflt;
804 }
805 if (!s->m.mounted_vol[0]) {
806 goto dflt;
807 }
808
809 err = ncp_dirhandle_alloc(s, ni->volNumber, ni->DosDirNum, &dh);
810 if (err) {
811 goto dflt;
812 }
813 err = ncp_get_directory_info(s, dh, &vi);
814 ncp_dirhandle_free(s, dh);
815 if (err) {
816 goto dflt;
817 }
818 buf->f_type = NCP_SUPER_MAGIC;
819 buf->f_bsize = vi.sectors_per_block * 512;
820 buf->f_blocks = vi.total_blocks;
821 buf->f_bfree = vi.free_blocks;
822 buf->f_bavail = vi.free_blocks;
823 buf->f_files = vi.total_dir_entries;
824 buf->f_ffree = vi.available_dir_entries;
825 buf->f_namelen = 12;
826 return 0;
827
828 /* We cannot say how much disk space is left on a mounted
829 NetWare Server, because free space is distributed over
830 volumes, and the current user might have disk quotas. So
831 free space is not that simple to determine. Our decision
832 here is to err conservatively. */
833
834dflt:;
835 buf->f_type = NCP_SUPER_MAGIC;
836 buf->f_bsize = NCP_BLOCK_SIZE;
837 buf->f_blocks = 0;
838 buf->f_bfree = 0;
839 buf->f_bavail = 0;
840 buf->f_namelen = 12;
841 return 0;
842}
843
844int ncp_notify_change(struct dentry *dentry, struct iattr *attr)
845{
846 struct inode *inode = dentry->d_inode;
847 int result = 0;
848 __le32 info_mask;
849 struct nw_modify_dos_info info;
850 struct ncp_server *server;
851
852 result = -EIO;
853
854 lock_kernel();
855
856 server = NCP_SERVER(inode);
857 if ((!server) || !ncp_conn_valid(server))
858 goto out;
859
860 /* ageing the dentry to force validation */
861 ncp_age_dentry(server, dentry);
862
863 result = inode_change_ok(inode, attr);
864 if (result < 0)
865 goto out;
866
867 result = -EPERM;
868 if (((attr->ia_valid & ATTR_UID) &&
869 (attr->ia_uid != server->m.uid)))
870 goto out;
871
872 if (((attr->ia_valid & ATTR_GID) &&
873 (attr->ia_gid != server->m.gid)))
874 goto out;
875
876 if (((attr->ia_valid & ATTR_MODE) &&
877 (attr->ia_mode &
878 ~(S_IFREG | S_IFDIR | S_IRWXUGO))))
879 goto out;
880
881 info_mask = 0;
882 memset(&info, 0, sizeof(info));
883
884#if 1
885 if ((attr->ia_valid & ATTR_MODE) != 0)
886 {
887 umode_t newmode = attr->ia_mode;
888
889 info_mask |= DM_ATTRIBUTES;
890
891 if (S_ISDIR(inode->i_mode)) {
892 newmode &= server->m.dir_mode;
893 } else {
894#ifdef CONFIG_NCPFS_EXTRAS
895 if (server->m.flags & NCP_MOUNT_EXTRAS) {
896 /* any non-default execute bit set */
897 if (newmode & ~server->m.file_mode & S_IXUGO)
898 info.attributes |= aSHARED | aSYSTEM;
899 /* read for group/world and not in default file_mode */
900 else if (newmode & ~server->m.file_mode & S_IRUGO)
901 info.attributes |= aSHARED;
902 } else
903#endif
904 newmode &= server->m.file_mode;
905 }
906 if (newmode & S_IWUGO)
907 info.attributes &= ~(aRONLY|aRENAMEINHIBIT|aDELETEINHIBIT);
908 else
909 info.attributes |= (aRONLY|aRENAMEINHIBIT|aDELETEINHIBIT);
910
911#ifdef CONFIG_NCPFS_NFS_NS
912 if (ncp_is_nfs_extras(server, NCP_FINFO(inode)->volNumber)) {
913 result = ncp_modify_nfs_info(server,
914 NCP_FINFO(inode)->volNumber,
915 NCP_FINFO(inode)->dirEntNum,
916 attr->ia_mode, 0);
917 if (result != 0)
918 goto out;
919 info.attributes &= ~(aSHARED | aSYSTEM);
920 {
921 /* mark partial success */
922 struct iattr tmpattr;
923
924 tmpattr.ia_valid = ATTR_MODE;
925 tmpattr.ia_mode = attr->ia_mode;
926
927 setattr_copy(inode, &tmpattr);
928 mark_inode_dirty(inode);
929 }
930 }
931#endif
932 }
933#endif
934
935 /* Do SIZE before attributes, otherwise mtime together with size does not work...
936 */
937 if ((attr->ia_valid & ATTR_SIZE) != 0) {
938 int written;
939
940 DPRINTK("ncpfs: trying to change size to %ld\n",
941 attr->ia_size);
942
943 if ((result = ncp_make_open(inode, O_WRONLY)) < 0) {
944 result = -EACCES;
945 goto out;
946 }
947 ncp_write_kernel(NCP_SERVER(inode), NCP_FINFO(inode)->file_handle,
948 attr->ia_size, 0, "", &written);
949
950 /* According to ndir, the changes only take effect after
951 closing the file */
952 ncp_inode_close(inode);
953 result = ncp_make_closed(inode);
954 if (result)
955 goto out;
956
957 if (attr->ia_size != i_size_read(inode)) {
958 result = vmtruncate(inode, attr->ia_size);
959 if (result)
960 goto out;
961 mark_inode_dirty(inode);
962 }
963 }
964 if ((attr->ia_valid & ATTR_CTIME) != 0) {
965 info_mask |= (DM_CREATE_TIME | DM_CREATE_DATE);
966 ncp_date_unix2dos(attr->ia_ctime.tv_sec,
967 &info.creationTime, &info.creationDate);
968 }
969 if ((attr->ia_valid & ATTR_MTIME) != 0) {
970 info_mask |= (DM_MODIFY_TIME | DM_MODIFY_DATE);
971 ncp_date_unix2dos(attr->ia_mtime.tv_sec,
972 &info.modifyTime, &info.modifyDate);
973 }
974 if ((attr->ia_valid & ATTR_ATIME) != 0) {
975 __le16 dummy;
976 info_mask |= (DM_LAST_ACCESS_DATE);
977 ncp_date_unix2dos(attr->ia_atime.tv_sec,
978 &dummy, &info.lastAccessDate);
979 }
980 if (info_mask != 0) {
981 result = ncp_modify_file_or_subdir_dos_info(NCP_SERVER(inode),
982 inode, info_mask, &info);
983 if (result != 0) {
984 result = -EACCES;
985
986 if (info_mask == (DM_CREATE_TIME | DM_CREATE_DATE)) {
987 /* NetWare seems not to allow this. I
988 do not know why. So, just tell the
989 user everything went fine. This is
990 a terrible hack, but I do not know
991 how to do this correctly. */
992 result = 0;
993 } else
994 goto out;
995 }
996#ifdef CONFIG_NCPFS_STRONG
997 if ((!result) && (info_mask & DM_ATTRIBUTES))
998 NCP_FINFO(inode)->nwattr = info.attributes;
999#endif
1000 }
1001 if (result)
1002 goto out;
1003
1004 setattr_copy(inode, attr);
1005 mark_inode_dirty(inode);
1006
1007out:
1008 unlock_kernel();
1009 return result;
1010}
1011
1012static int ncp_get_sb(struct file_system_type *fs_type,
1013 int flags, const char *dev_name, void *data, struct vfsmount *mnt)
1014{
1015 return get_sb_nodev(fs_type, flags, data, ncp_fill_super, mnt);
1016}
1017
1018static struct file_system_type ncp_fs_type = {
1019 .owner = THIS_MODULE,
1020 .name = "ncpfs",
1021 .get_sb = ncp_get_sb,
1022 .kill_sb = kill_anon_super,
1023 .fs_flags = FS_BINARY_MOUNTDATA,
1024};
1025
1026static int __init init_ncp_fs(void)
1027{
1028 int err;
1029 DPRINTK("ncpfs: init_ncp_fs called\n");
1030
1031 err = init_inodecache();
1032 if (err)
1033 goto out1;
1034 err = register_filesystem(&ncp_fs_type);
1035 if (err)
1036 goto out;
1037 return 0;
1038out:
1039 destroy_inodecache();
1040out1:
1041 return err;
1042}
1043
1044static void __exit exit_ncp_fs(void)
1045{
1046 DPRINTK("ncpfs: exit_ncp_fs called\n");
1047 unregister_filesystem(&ncp_fs_type);
1048 destroy_inodecache();
1049}
1050
1051module_init(init_ncp_fs)
1052module_exit(exit_ncp_fs)
1053MODULE_LICENSE("GPL");